3D: Is it bad for your vision?

By Dr. Brandon Swink


3D viewing is all the rage these days. From movies, home television sets and video game systems, and even to classrooms, 3D is being used for entertainment and education, particularly for children. As more and more people are spending more time looking through 3D glasses, it is natural to wonder whether all of this is having an impact on the eyes and vision.

According to the American Optometric Association (AOA), not only is there no danger. of 3D to the eyes, but it is actually a useful screening mechanism for identifying. underlying vision disorders.

For viewers with healthy eyesight, 3D creates a lifelike depth to the screen. This ability to. perceive depth in 3D is called stereopsis and for some, it is impossible. Such an inability. to perceive depth is a sign that something could be wrong and an eye examination is. needed. Some say that 3D vision screening is perhaps even more sensitive than the. standard eye chart due to the fact that it requires both eyes to work and coordinate. together to focus on the images presented. Oftentimes, eye coordination disorders are. difficult to diagnose until a behavioral symptom is reported such as difficulty reading or. headaches.

The 3D's. The AOA has identified the 3D's of 3D viewing which represent the warning signs that. a vision problem might be present. Make an appointment for an eye exam, if you or your. child experiences the following while viewing 3D:.

Dizziness (or nausea) Discomfort (such as eyestrain or headaches) Lack of depth perception

Other red flags would be an inability to adjust easily back to normal vision or just a. general sense that you aren't seeing what everyone else is seeing, which could. indicate a subtle vision issue that needs to be corrected.

A common children's disorder which could cause discomfort or eye strain during 3D. viewing is convergence insufficiency. This is when the eyes are not able to focus on. an object properly due to an inability for the eyes to work together. Depth perception. difficulties can also be due to focusing problems or difficulty integrating vision with. other senses. Sometimes, difficulty with 3D viewing is just a matter of a small vision. misalignment or a slight vision disparity between the two eyes.

Even if you don't have difficulty or discomfort viewing 3D, it is important to give your. eyes a break every once in a while to avoid symptoms of Computer Vision Syndrome. which include headaches, eye strain, blurred vision, eye fatigue and neck and shoulder. pain. To do this, follow the 20/20/20 rule. Every 20 minutes, take 20 seconds and look at. something 20 feet away. This will allow your eye muscles to relax and promote blinking. Often when we are watching a screen our blink rate is reduced which can lead to dry. eyes.

3D is meant to add enjoyment to learning and entertainment so if you or your child find it to be uncomfortable or you just don't see what is so different about it - it's time to schedule a visit to the eye doctor.




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